(r2) NeoPixel < MecrispCube

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---+ NeoPixel


   * WS2812B https://cdn-shop.adafruit.com/datasheets/WS2812B.pdf

| !T0H  | 0code, high voltage time | 0.4us ±150ns  |
| !T1H  | 1code, high voltage time | 0.8us ±150ns  |
| !T0L  | 0code, low voltage time  | 0.85us ±150ns |
| !T1L  | 1code, low voltage time  | 0.45us ±150ns |
| RES   | low voltage time         | Above 50&#956;s    |

   * 1 bit takes 1.25 us, 24 bit take 30 us
   * Timer resolution 0.25 us
   * MSB first
   * GRB

HTML Color 0xRRGGBB

---+++ Set/Reset Portpin

GPIO port bit set/reset register GPIOx_BSRR
   * Address offset: 0x18, x = A..K
   * bit0 .. bit15 bit set
   * bit16 .. bit31 bit reset

D8 = 

---++ Set Counter

---++ Set Time Period

autoreload

---++ Clear Update Flag

---++ Enable/Disable Timer Interrupt

---++ Start/Stop Timer





-- %USERSIG{PeterSchmid - 2021-04-05}%
   * timing-neopixel.png: <br />
     <img src="%ATTACHURLPATH%/timing-neopixel.png" alt="timing-neopixel.png" width="583" height="400" />

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Topic attachments
I	Attachment	History	Action	Size	Date	Who	Comment
png	timing-neopixel.png	r1	manage	19.1 K	2021-04-05 - 14:38	PeterSchmid

Topic revision: r2 - 2021-04-10 - PeterSchmid